<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edga">
        <meta name="viewport" content="width=device-width,initial-scale=1.0">
        <title>Document</title> 
    </head>
    <body>
        <ol>
            <li>1</li>
            <li>2</li>
            <li>3</li>
        </ol>
        
        <script src="b.js"></script>
        <script src="a.js"></script>
        
        <script>
            console.log(star)
        </script>
    </body>
</html>